Opening packs and achieving particular mastery levels reward wild cards tied to Magics different rarities: common, uncommon, rare, and mythic
For simplicity's sake, I'm representing these in a bullet-point format, but if you're looking for additional effects to round out your lists with some variety, you should consider some of these
Whenever this creature enters, put a +1/+1 counter on target creature
If a card is good enough to be in contention for the best card in Magics second-most-powerful format, its bound to make waves in Historic as well
Last Canon is an item card that lets players add 3 to their Strength when challenging by using one ink and banishing this card
Set : At this point youll want to check any cards that you have in play to see if they have effects that mention the beginning phase and activate them